Consolidated Statements Of Earnings - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Feb. 28, 2025	Feb. 29, 2024	Feb. 28, 2023
SALES AND OPERATING REVENUES:
NET SALES AND OPERATING REVENUES	$ 26,353,420	$ 26,536,040	$ 29,684,873
TOTAL COST OF SALES	23,455,519	23,822,831	26,884,670
GROSS PROFIT	2,897,901	2,713,209	2,800,203
CARMAX AUTO FINANCE INCOME	581,749	568,271	663,404
Selling, General and Administrative Expense	2,435,404	2,286,378	2,487,357
Depreciation, Depletion and Amortization, Nonproduction	255,321	239,028	228,449
Interest expense	107,941	124,750	120,398
Nonoperating Income (Expense)	11,624	(10,271)	(9,401)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest	669,360	641,595	636,804
Income tax provision	168,804	162,391	152,042
Net earnings	$ 500,556	$ 479,204	$ 484,762
Basic (in shares)	155,330	158,216	158,800
Diluted (in shares)	156,061	158,707	159,771
Basic (in dollars per share)	$ 3.22	$ 3.03	$ 3.05
Diluted (in dollars per share)	$ 3.21	$ 3.02	$ 3.03
Used vehicle sales
SALES AND OPERATING REVENUES:
NET SALES AND OPERATING REVENUES	$ 21,079,654	$ 20,922,279	$ 23,034,286
TOTAL COST OF SALES	19,256,483	19,170,320	21,186,135
Wholesale vehicle sales
SALES AND OPERATING REVENUES:
NET SALES AND OPERATING REVENUES	4,587,457	4,975,802	5,989,796
TOTAL COST OF SALES	4,029,876	4,419,044	5,399,969
Other sales and revenues
SALES AND OPERATING REVENUES:
NET SALES AND OPERATING REVENUES	686,309	637,959	660,791
TOTAL COST OF SALES	$ 169,160	$ 233,467	$ 298,566
NET SALES AND OPERATING REVENUES
Percentage of Sales
Item as a percent of net sales and operating revenues	100.00%	100.00%	100.00%
TOTAL COST OF SALES
Percentage of Sales
Item as a percent of net sales and operating revenues	89.00%	89.80%	90.60%
GROSS PROFIT
Percentage of Sales
Item as a percent of net sales and operating revenues	11.00%	10.20%	9.40%
CARMAX AUTO FINANCE INCOME
Percentage of Sales
Item as a percent of net sales and operating revenues	2.20%	2.10%	2.20%
Selling, general and administrative expenses
Percentage of Sales
Item as a percent of net sales and operating revenues	9.20%	8.60%	8.40%
Depreciation and Amortization
Percentage of Sales
Item as a percent of net sales and operating revenues	1.00%	0.90%	0.80%
Interest expense
Percentage of Sales
Item as a percent of net sales and operating revenues	0.40%	0.50%	0.40%
Other (income) expense
Percentage of Sales
Item as a percent of net sales and operating revenues	0.00%	0.00%	0.00%
Earnings before income taxes
Percentage of Sales
Item as a percent of net sales and operating revenues	2.50%	2.40%	2.10%
Income tax provision
Percentage of Sales
Item as a percent of net sales and operating revenues	0.60%	0.60%	0.50%
NET EARNINGS
Percentage of Sales
Item as a percent of net sales and operating revenues	1.90%	1.80%	1.60%
NET SALES AND OPERATING REVENUES | Used vehicle sales
Percentage of Sales
Item as a percent of net sales and operating revenues	80.00%	78.80%	77.60%
NET SALES AND OPERATING REVENUES | Wholesale vehicle sales
Percentage of Sales
Item as a percent of net sales and operating revenues	17.40%	18.80%	20.20%
NET SALES AND OPERATING REVENUES | Other sales and revenues
Percentage of Sales
Item as a percent of net sales and operating revenues	2.60%	2.40%	2.20%
TOTAL COST OF SALES | Used vehicle sales
Percentage of Sales
Item as a percent of net sales and operating revenues	73.10%	72.20%	71.40%
TOTAL COST OF SALES | Wholesale vehicle sales
Percentage of Sales
Item as a percent of net sales and operating revenues	15.30%	16.70%	18.20%
TOTAL COST OF SALES | Other sales and revenues
Percentage of Sales
Item as a percent of net sales and operating revenues	0.60%	0.90%	1.00%